const path = require('path');

// 不加前缀的 模块 - 都是在node_modules文件夹下的
const num = require('20-1demo');
const num2 = require('20-1demo');
const num3 = require('20-1demo');

const obj = require('demo');

console.log(num);
console.log(num2);
console.log(num3);

console.log(obj);